#include <stdio.h>
#include <stdlib.h>
#include <math.h>

const int k = 10;
const int N = 5;
int sum = 0;

int fillArray(int *arr){
  for (int i = 0;i<k;i++){
    arr[i] = rand()%20;
  }
}

void printArray(int *arr){
  for(int i=0;i<k;i++){
    printf("%d ",arr[i]);

  }
}

int findMax(int *arr){
  int max=arr[0];
  for(int i = 0; i<k;i++){
    if(max<arr[i]){
      max = arr[i];
    }
  }
  return max;
}
int fillSeriesArray(int *arr, int size){
        arr[0] = 1;
        arr[1] = -8;
        arr[2] =  6;

        for(int i=3;i<size;i++){
          arr[i] = -8 * arr[i-1] - sqrt(2/3 * arr[i-2]) + 13 * arr[i-3];
        }

}



int main(){

        srand(time(NULL));
        int max;
        int *randomNumbers = malloc(sizeof(int)* k);


        fillArray(randomNumbers);
        printArray(randomNumbers);

        max = findMax(randomNumbers);
        int *seriesArray = malloc(max * sizeof(int));
        fillSeriesArray(seriesArray,max);
        printArray(seriesArray);

        int input[2], output[2];
        pipe(input);
        pipe(output);
        int i = 0;


        // proces nadrzedny dostaje liczbe z tablicy
        for(i =0;i< k;i++){
        write(input[1],&randomNumbers[i],sizeof(randomNumbers[i]));
        }

        for(i = 0;i<N;i++){
                if(fork() == 0){
                while(1){
                        int x = 0;
                        read(input[0],&x, sizeof(x));
                        if(x<0)
                                exit(0);

                        int result = seriesArray[x];
                        write(output[1],&result,sizeof(result));
                        }
                }
        }

        //
        for(i = 0; i<N;i++){
        int result = 0;
        read(output[0],&result,sizeof(result));
        sum+=result;
        }

        for(i = 0; i<N;i++){
        int terminate = -1;
        write(input[1],&terminate,sizeof(terminate));
        }

//printf("Suma : %d",sum);
return 0;
}